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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/18/156" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Letter, from Charles Wheatstone to Sir John Herschel, dated at Lower Mall, Hammersmith</dc:title>
  <dc:description>Autograph letter signed by sender. Lists seven French and German works [1837-1847] on optical science. Comments on one. Quotes copyright law on reproducing passages from these.</dc:description>
  <dc:date>26 July 1849</dc:date>
</rdf:Description>